Table 1.
Summary of mask studies
| Author(s) (Year) | Key points | Type of Particles | Interventions | Performance evaluation |
|---|---|---|---|---|
| Lee SA et al. (2008) [47] | Laboratory volunteer experiment; 12 healthy volunteers; OSHA test | NaCl aerosol (virus substitute) | Four models of N95 respirators and three models of surgical masks | Protection factor |
| Johnson DF et al. (2009) [49] | Laboratory patient experiment; nine patients coughed with masks; the Petri dish receives coughing particles | Influenza virus | Without masks N95 respirators Surgical masks | Virus detection load: cycle number |
| Radonovich LJ et al. (2019) [25] | Random case−control study; 2862 medical staff in influenza clinic | Influenza virus | N95 respirators Surgical masks | Number of infected health care workers |
| John D. Noti et al. (2012) [50] | Laboratory model experiment; cough mannequin; Breathing mannequin (wearing a mask) | Influenza virus | N95 respirators Surgical masks | Virus detection load |
| Seongman Bae et al. (2020) [51] | Laboratory patient experiment; four COVID-19 patients; Petri dish receives cough virus | SARS-Cov-2 | Surgical masks Cotton masks | Virus detection load |
| Milton DK et al. (2013) [48] | Laboratory patient experiment; 37 influenza patients; Collect exhaled particles from patients | Influenza virus | Surgical masks | Reduction of virus load by multiple |
| Tara Oberg et al. (2008) [45] | Laboratory infiltration experiment; aerosol particles of different sizes guided by air flow through the mask | Latex ball aerosol NaCl particles | Surgical masks Dental masks | Penetration rate |
| Derrick JL et al. (2006) [46] | Laboratory volunteer experiment; eight healthy volunteers; Tape sealing to improve the tightness of mask | Air dust particles | Surgical masks Laser masks FFP2 |
Reduction of virus load by multiple |
| J.L. Derrick et al. (2005) [52] | Laboratory volunteer experiment; six healthy volunteers; Collection of exhaled particulate matter | Human exhaled particles | 1-layer, 2-layer, 3-layer and 5-layer surgical masks | Reduction of virus load by multiple |
| Angela Weber et al. (1993) [53] | Laboratory model experiment; Breathing mannequin (wearing a mask) | Corn aerosol | Eight surgical masks | Penetration rate |
| Anna Davies et al. [44] | Laboratory volunteer experiment; 21 healthy volunteers; Cough box to collect target particles | B. atrophaeus Bacteriophage MS2 | Surgical masks Home-made masks | Filtration efficiency |